package com.lx.java8;

import org.junit.Test;

import java.time.*;
import java.time.temporal.ChronoUnit;

public class TimeDiffer {

    /**
     * @param
     * @ClassName: TimeDiffer
     * @Return: void
     * @Decription: 主要是Period类方法getYears（），getMonths（）和getDays（）来计算.
     * @CreateDate: Created in 2018/3/1 0001 下午 6:18
     * @Author: <a href="410508961@qq.com">夏凯</a>
     * @Modify:
     */
    @Test
    public void period() {

        LocalDate today = LocalDate.now();
        System.out.println("Today : " + today);
        LocalDate birthDate = LocalDate.of(1991, Month.DECEMBER, 16);
        System.out.println("BirthDate : " + birthDate);
        Period p = Period.between(birthDate, today);
        System.out.printf("年龄 : %d 年 %d 月 %d 日", p.getYears(), p.getMonths(), p.getDays());
    }

    /**
     * @param
     * @ClassName: TimeDiffer
     * @Return: void
     * @Decription: 提供了使用基于时间的值（如秒，纳秒）测量时间量的方法。
     * @CreateDate: Created in 2018/3/1 0001 下午 6:19
     * @Author: <a href="410508961@qq.com">夏凯</a>
     * @Modify:
     */
    @Test
    public void duration() {
        Instant inst1 = Instant.now();
        System.out.println("Inst1 : " + inst1);
        Instant inst2 = inst1.plus(Duration.ofSeconds(10));
        System.out.println("Inst2 : " + inst2);
        System.out.println("Difference in milliseconds : " + Duration.between(inst1, inst2).toMillis());
        System.out.println("Difference in seconds : " + Duration.between(inst1, inst2).getSeconds());

    }

    /**
     * @param
     * @ClassName: TimeDiffer
     * @Return: void
     * @Decription: ChronoUnit类可用于在单个时间单位内测量一段时间，例如天数或秒。以下是使用between（）方法来查找两个日期之间的区别的示例。
     * @CreateDate: Created in 2018/3/1 0001 下午 6:21
     * @Author: <a href="410508961@qq.com">夏凯</a>
     * @Modify:
     */
    @Test
    public void ChronoUnit() {
        LocalDate startDate = LocalDate.of(1993, Month.OCTOBER, 19);
        System.out.println("开始时间  : " + startDate);
        LocalDate endDate = LocalDate.of(2017, Month.JUNE, 16);
        System.out.println("结束时间 : " + endDate);
        long daysDiff = ChronoUnit.DAYS.between(startDate, endDate);
        System.out.println("两天之间的差在天数   : " + daysDiff);
    }
}
